As someone entering the Environmental Science industry it's good to see 'green' concepts filtering through even to adult website forums
Danielle: if there are enough 'green' minded members maybe you can organise an exclusive nature shoot, with proceeds going to that fund
As a tip to Palanhaar though, realise that the people that will appreciate your appeal are generally already 'green' minded. The people that don't agree are the ones that need convincing! And anything preachy or not well reasoned is a good way to get a blatant rejection of your point.
Convince others by example or reason - and even better, reasonable example! A lot of extreme green ideas are not always well reasoned. Saving trees is great, but it is starting to appear that harvesting lumber and replanting is far better use of land in the long run than replacing it with endless rows of palm oil plantations (which are used in part for 'green' solutions like biodiesel, remember).